"Berkeley on the Immediate Perception of Objects," in Phillip D. Cummins and Guenter Zoeller (eds.), Minds, Ideas, and Objects: Essays in the Theory of Representation in Modern Philosophy, North American Kant Society Studies in Philosophy, Volume 2, Ridgeview Publishing Company, 1992, pp. 201-213.

Member of the Honors Program Faculty, SUNY College at Brockport, 1983-1986.

Participant in the N.E.H. Summer Seminar on "Leibniz Among the Rationalists," University of Massachusetts at Amherst, 1981 (Seminar director: Robert C. Sleigh, Jr.).

Participant in the Council for Philosophic Studies' eight-week Summer Institute on "Phenomenology and Existentialism: Continental and Analytic Perspectives on Intentionality," University of California at Berkeley, 1980.

Workshop on Ideas in 17th and 18th Century Philosophy, University of Z&uumlrich, summer 2010.

American Philosophical Association, Eastern Division, December 2010.

Brockport Scholars Day, April 2011.

Institute of Philosophy of the Academy of Sciences of the Czech Republic and Institute of Philosophy and Religious Studies at Charles University in Prague, Conference on Belief and Doubt in David Hume September 2011.